Aetna CEO: Obamacare In A 'Death Spiral' Heading Into 2018. Aetna and Humana have called off their deal amid government concerns over competition. Here's a look back at six pivotal moments that led to this. Aetna and Humana have called off their deal amid government concerns over competition.
For the plant genus, see Synapsis (plant). Synapsis (also called syndesis) is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them. Synapsis takes place during prophase I of meiosis.
Synapsis occurs (during meiosis, not mitosis) Mitosis and cytokinesis result in the formation of _____; meiosis and cytokinesis result in the formation of _____. two diploid cells . . . four haploid cells. Variation occurs when chromosomes are shuffled in _____.